Nail polisher



FIG. 1 is a front elevational view of a nail polisher;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left elevational view thereof;

FIG. 4 is a right elevational view thereof;

FIG. 5 is a top plan view thereof thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a perspective view thereof; and,

FIG. 8 is another perspective view thereof.

The evenly-broken lines where present illustrate portions of the nail polisher that form no part of the claimed design. 

CLAIM The ornamental design for a nail polisher, as shown and described. 